Heating apparatus



y 1931. H. L. SCHRANKEL 1,805,556 v HEATING APPARATUS File ed Feb. 2. 1929 v fivemfan W M S m/W44 Jfivrrzcj.

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Patented Ma, 19, 1931 '1 UNITED STATES HOWARD L. ,soHRANxnL, onrnrretd ivnw Yogic, i

HEATING l A BA fU S i1 1 l f h Application filed February 2,1929: Serial No. 337,142. I I

This invention relates to improvements in heating apparatus'and more particularly to an apparatus in which gas is used asthe fueh Its chief object is the provision of an a'p-- 5 paratus ofthis character which is efficient in operation, which produces an intense heat 1 with a min mum consumpt on of fuel, and

' in which the gasand airare so introduced and combined as to alford 'practically perfect A further object of the invention is to provide a gas-burning system for furnaces, boil- 7 ers and the like, which is simple, compact and inexpensive in construction, and which can be readily installed without materially altering the present heating equipment, In the accompanying drawings Figure 1 is a fragmentary'sectional view.

of aheating apparatus showing my improve- ,7 :ments embodied therein. Figure 2 is an enlarged fragmentary longitudinal section of' that part of the device wherein the gas and air are mixed to formthe combustible mixture. V 1

Similar characters of reference indicate correspondingparts throughout the several views. While the invention-is applicable to any form or type of heating apparatus, it has been 3:- shown, by way of example, in connection with the casing 10 of a hot air furnace. In the fire-box 11 of the furnace is a gas burner o of any suitable and well known construct on,

that depicted in the-drawings consisting of around the fire-box and supported on branch pipeslS leading to a T or similar fitting 14 arcuatesections12, 12 extending partially meter (not shown) through a gas line or pipe 18 1 which is connected {at its, outlet end tota T-fitting 19 secured to the: outlet end of the airpipe.; 'To*the other endsof this fitting is joined a-anixing chamber preferably in the 7 form of a curved'memberor elbow like fitting 20 connected to theT- fitting 14 by an upright mixture-conducting, pipe 21. 1 The curved Ipor-. 1 tion oft-his elbow: fitting constitutes, a, ,de- 'flecting wall against whichthe proportionate":

volumes of gas and air impinge vand?',becorne thoroughly mixed. Valves I22 and 23, in the] air and gas linesfserve to controlthe supply of these elementsto the burners. I

Byjthis construction and arrangement of partsithe gas'is introduced into theair supply at agpoint immediately adj oining the mix-' ring .chamber; and thoroughlynixed there,f with before .reachingthe point of c0nsumpa tionlat the burners. 1 Furthermore, the intro- 'duction .ofthe gas atthej point-shown,in theqoi j drawings and theprovision;of the elbow results in, a;thorough,and intimate-jintermin-q gling of thetwofelen entsto producea perfect combustibl'e mixture, the dispositionoff the felbow z ca'usingavwhirling action of the gas, and airas it travelsfrom a horizontal toa vertical path and momentarily bafliing the 1 flow ofythe gasiand airto, effectively cause 1 athoroughblending thereof, This -mixture I passeskunderi "high pressure immediately to he bu n rs an -pro c s a ens l ea w th mm n mwn mptmn gasp a ela mas my i t t 0n"=, I

1 .ffII1: flJg3. S/ burning device of the ;character V described, a burner, va mixture-conducting pipeconnected thereto, a pipe for delivering air under-pressure to the inlet endof said mixture-conducting pipe and disposed at substantially right angles thereto, a gas supply pipe connected to'said air pipe ata point adjacent to its connection with the mixtureconducting pipe, the outlet end of'said gas pipe terminatingat thebore of the air pipe, and means interposed between theinlet end offthe mixture-conducting pipe and the outlet end of said air pipe for effecting an intimate mixing of the air and gas.

2;"In argas burning device of the character described, a burner, a mixture-conducting pipe connected thereto, a pipe for delivering air under pressure to the inlet end of said mixture-conducting pipe and disposed at substantially right angles thereto, a gas supply pipe connected to said air pipe at a point immediate to its connection with the mixture-conducting pipe, the outlet end of said gas pipe terminating at the bore of the air pipe for delivering the gas radially there'- of, and a connection between the inlet end of 10 he mixture-conducting pipe and the outlet end of said air pipe, said connection includ- 'ng a deflecting wall against which the gas nd air discharged from said air pipe are ;adapted to impinge and intimately mix be V 15 I fore being delivered to the burner.

3. In a as-burning device of the character descri ed, a burner, a mixture-conduct ing'pipe depending therefrom, a-pipe tor deliverin air under pressure arranged at sub mstantia 1y right angles to said mixture-conducting pipe and having its outlet end disposed adjacent to the inlet end of the latter, agas supply pipe connected to said air pipe adjacent its outlet end, and an elbow-like fitmtingconnecting the inlet and outlet ends of the mixture-conducting pipe and the air pipe,respectively, and against the inner wall of which the gas. and air are adapted-to impinge to effect their intimate mixture, the

wdistance between the burner and the elbowlike fitting being greater than the distance between the latter and the point of connection at the gas pipe to the air pipe.

4.111s gas burning device of the charmacter described, a burner, a mixture-conducting pipeconnected totheburner, a pipe for delivering air under pressure to said mixture-conducting pipe, a T-fitting connected to the outlet end of said air-"pipe, an' flelbow fittingconstituti'nga mixing chamber connecting said T-fitting' with the inlet end of the mixture-conducting pipe, and a gas supply pipe connected to said T-fitting for de 'vering the gas to said air pipe at apoint I immediately adjoining said elbow fitting, theoutlet endof the gas pipe terminating at i the bore of the T-fittin to provide a clear i and unobstructed path'i or the air supply. I a HOWARD L, SCHRANKEL. 

